t.Errorf("Castagnoli(%s) = 0x%x want 0x%x", g.in, crc, g.castagnoli)
		}
	}
}

// testCrossCheck generates random buffers of various lengths and verifies that
// the two "update" functions return the same result.
func testCrossCheck(t *testing.T, crcFunc1, crcFunc2 func(crc uint32, b []byte) uint32) {
	// The AMD64 implementation has some cutoffs at lengths 168*3=504 and